2 files changed, 24 insertions, 0 deletions
diff --git a/src/soc/nvidia/tegra/apbmisc.c b/src/soc/nvidia/tegra/apbmisc.c
index 5983d546d2..3fc0ef7de1 100644
--- a/src/soc/nvidia/tegra/apbmisc.c
+++ b/src/soc/nvidia/tegra/apbmisc.c
@@ -33,3 +33,16 @@ void clamp_tristate_inputs(void)
 {
 	write32(PP_PINMUX_CLAMP_INPUTS, &misc->pp_pinmux_global);
 }
+
+void tegra_revision_info(struct tegra_revision *id)
+{
+	uintptr_t gp_hidrev= (uintptr_t)TEGRA_APB_MISC_BASE + MISC_GP_HIDREV;
+	uint32_t reg;
+
+	reg = read32((void *)(gp_hidrev));
+
+	id->hid_fam = (reg >> 0) & 0x0f;
+	id->chip_id = (reg >> 8) & 0xff;
+	id->major = (reg >> 4) & 0x0f;
+	id->minor = (reg >> 16) & 0x07;
+}
diff --git a/src/soc/nvidia/tegra/apbmisc.h b/src/soc/nvidia/tegra/apbmisc.h
index 2f1811a1dd..38cd527c9f 100644
--- a/src/soc/nvidia/tegra/apbmisc.h
+++ b/src/soc/nvidia/tegra/apbmisc.h
@@ -34,8 +34,19 @@ struct apbmisc {
 
 #define PP_PINMUX_CLAMP_INPUTS		(1 << 0)
 
+enum {
+	MISC_GP_HIDREV = 0x804
+};
+
+struct tegra_revision {
+	int hid_fam;
+	int chip_id;
+	int major;
+	int minor;
+};
 
 void enable_jtag(void);
 void clamp_tristate_inputs(void);
+void tegra_revision_info(struct tegra_revision *id);
 
 #endif	/* __SOC_NVIDIA_TEGRA_APBMISC_H__ */